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公开(公告)号：US20050142321A1
公开(公告)日：2005-06-30
申请号：US11013693
申请日：2004-12-17
申请人： Osamu Miyahara , Masami Kaneko , Kazuo Mannami
发明人： Osamu Miyahara , Masami Kaneko , Kazuo Mannami
CPC分类号： G11B5/7315 , C03C15/00 , C03C17/30 , G11B5/8404 , Y10T428/218
摘要： A glass substrate for magnetic disks, which is a doughnut-type glass substrate with its inner peripheral edge surface etching-treated, wherein the etching-treated inner peripheral edge surface is coated with a silicone resin or a polyimide.
摘要翻译： 一种用于磁盘的玻璃基板，其是其内周边缘表面被蚀刻处理的环形玻璃基板，其中蚀刻处理的内周边缘表面涂覆有硅树脂或聚酰亚胺。
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公开(公告)号：US07691207B2
公开(公告)日：2010-04-06
申请号：US11486010
申请日：2006-07-14
CPC分类号： G11B5/8404 , B08B3/02 , B08B11/02 , B08B2203/0288 , C03C23/0075 , G11B23/505
摘要： A method for cleaning a disk-shape glass substrate, which comprises rotating the disk-shape glass substrate on its center with its main surface vertical, and making a cleaning fluid irradiated with ultrasonic waves run down on the outer peripheral edge surface of the rotating glass substrate.
摘要翻译： 一种盘状玻璃基板的清洗方法，其特征在于，使所述盘状玻璃基板的主面垂直旋转，使得在所述旋转玻璃的外周缘面上使用超声波照射的清洗液 基质。
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公开(公告)号：US20070017547A1
公开(公告)日：2007-01-25
申请号：US11486010
申请日：2006-07-14
CPC分类号： G11B5/8404 , B08B3/02 , B08B11/02 , B08B2203/0288 , C03C23/0075 , G11B23/505
摘要： A method for cleaning a disk-shape glass substrate, which comprises rotating the disk-shape glass substrate on its center with its main surface vertical, and making a cleaning fluid irradiated with ultrasonic waves run down on the outer peripheral edge surface of the rotating glass substrate.
摘要翻译： 一种盘状玻璃基板的清洗方法，其特征在于，使所述盘状玻璃基板的主面垂直旋转，使得在所述旋转玻璃的外周缘面上使用超声波照射的清洗液 基质。
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公开(公告)号：US20100136372A1
公开(公告)日：2010-06-03
申请号：US12628484
申请日：2009-12-01
CPC分类号： G11B5/8404 , B24B37/24 , B24D3/32
摘要： The present invention relates to a method for producing a glass substrate for a magnetic disk, the method including a step of polishing a main surface of a circular glass plate while supplying a polishing slurry containing a polishing material, in which polishing is performed, after a polishing surface is subjected to dressing treatment, by using a polishing pad having: a first resin foam layer which forms the polishing surface, includes a resin foam having pores with a pore diameter of more than 20 μm and has a thickness of 400 μm or less; and a second resin foam layer which is provided between a platen for fixing the polishing pad and the first resin foam layer, includes a resin foam having pores with a pore diameter of 20 μm or less and has a thickness of 50 to 250 μm, and in which a total thickness of the first resin foam layer and the second resin foam layer is 550 μm or less, and a international rubber hardness degree of the polishing pad measured by the M method according to JIS K6253 is 40 IRHD or more.
摘要翻译： 本发明涉及一种用于制造磁盘用玻璃基板的方法，所述方法包括以下步骤：向所述圆形玻璃板的主表面进行抛光，同时向所述抛光材料供给包含抛光材料的抛光浆料 通过使用具有：形成研磨面的第一树脂发泡层的研磨垫，进行敷料处理，包括孔径在20μm以上，厚度为400μm以下的孔的树脂发泡体 ; 以及第二树脂泡沫层，其设置在用于固定所述抛光垫的台板和所述第一树脂发泡层之间，包括具有孔径为20μm以下且具有50〜250μm的厚度的孔的树脂发泡体，以及 其中第一树脂发泡层和第二树脂发泡层的总厚度为550μm以下，通过根据JIS K6253的M法测定的研磨垫的国际橡胶硬度为40IRHD以上。
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公开(公告)号：US20110117822A1
公开(公告)日：2011-05-19
申请号：US12946290
申请日：2010-11-15
申请人： Kenichiro TERADA , Kazuo Mannami , Minoru Tamada
发明人： Kenichiro TERADA , Kazuo Mannami , Minoru Tamada
CPC分类号： B24B53/017 , B24B7/228
摘要： Dressing treatment of a polishing pad, adjusting a polishing surface of the polishing pad to given flatness and surface roughness without deteriorating productivity, a method for polishing a glass substrate, including polishing a main surface of a glass substrate using the polishing pad adjusted by the dressing treatment, and a method for manufacturing a glass substrate using the polishing method are provided. A dressing jig having arithmetic surface roughness on a surface performing dressing treatment of from 0.10 μm to 2.5 μm is used as the dressing jig for adjusting a polishing surface of the polishing pad to given flatness and surface roughness. A main surface of the glass substrate is polished with the polishing surface of the polishing pad having been subjected to a dressing treatment using the dressing jig.
摘要翻译： 抛光垫的修整处理，将抛光垫的抛光表面调整到给定的平坦度和表面粗糙度而不降低生产率;玻璃基板的抛光方法，包括使用由敷料调节的抛光垫来研磨玻璃基板的主表面 提供了使用该研磨方法制造玻璃基板的方法。 使用在0.10μm〜2.5μm的修整处理的表面上具有算术表面粗糙度的修整夹具作为调整抛光垫的研磨面的修整夹具，使其具有平坦度和表面粗糙度。 使用修整夹具对抛光垫的研磨面进行了修整处理，研磨玻璃基板的主表面。
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公开(公告)号：US5900296A
公开(公告)日：1999-05-04
申请号：US634428
申请日：1996-04-18
申请人： Ichiro Hayashi , Kei Maeda , Kazuo Mannami
发明人： Ichiro Hayashi , Kei Maeda , Kazuo Mannami
CPC分类号： G11B5/7315 , C03C3/087 , G11B5/8404 , Y10T428/21 , Y10T428/315
摘要： A glass substrate for magnetic disks, obtained by chemical strengthening treatment of a glass consisting essentially of from 50 to 65 wt % of SiO.sub.2, from 5 to 15 wt % of Al.sub.2 O.sub.3, from 2 to 7 wt % of Na.sub.2 O, from 4 to 9 wt % of K.sub.2 O, from 7 to 14 wt % of Na.sub.2 O+K.sub.2 O, from 12 to 25 wt % of MgO+CaO+SrO+BaO, and from 1 to 6 wt % of ZrO.sub.2.
摘要翻译： 通过化学强化处理基本上由SiO 2 50〜65重量％，Al 2 O 3 5〜15重量％，Na 2 O 2〜7重量％，4〜9重量％组成的玻璃基板 K 2 O的比例为7〜14重量％，Na 2 O + K 2 O为12〜25重量％，MgO + CaO + SrO + BaO为12〜25重量％，ZrO 2为1〜6重量％。
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公开(公告)号：US5087481A
公开(公告)日：1992-02-11
申请号：US329993
申请日：1989-03-29
申请人： Tu Chen , Toru Iseda , Kazuo Mannami
发明人： Tu Chen , Toru Iseda , Kazuo Mannami
IPC分类号： G11B5/73
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24355
摘要： A glass disk is subjected to a chemical or gentle mechanical polishing step to remove microcracks or scratches in the disk surface prior to chemically texturing the disk. Thereafter, magnetic media is deposited onto the glass disk. We have discovered that by performing this pre-texturing polishing step, we can avoid the phenomenon of "linkage bumps," which could otherwise cause the resulting magnetic disk to fail a glide-type test or to cause a read/write head crash.
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公开(公告)号：US20120251760A1
公开(公告)日：2012-10-04
申请号：US13245252
申请日：2011-09-26
CPC分类号： G11B5/8404 , B24B37/24 , B24D3/32
摘要： A method for producing a glass substrate for a magnetic disk involving the use of a polishing pad having: a first resin foam layer which forms the polishing surface, includes a resin foam having pores with a pore diameter of more than 20 μm and has a thickness of 400 μm or less; and a second resin foam layer which is provided between a platen for fixing the polishing pad and the first resin foam layer, includes a resin foam having pores with a pore diameter of 20 μm or less and has a thickness of 50 to 250 μm, and in which a total thickness of the first resin foam layer and the second resin foam layer is 550 μm or less, and a international rubber hardness degree of the polishing pad measured by the M method according to JIS K6253 is 40 IRHD or more.
摘要翻译： 一种用于制造用于磁盘的玻璃基板的方法，其涉及使用具有：形成所述抛光表面的第一树脂发泡层的抛光垫，所述抛光垫包括具有孔径大于20μm的孔的树脂泡沫，并且具有厚度 400μm以下; 以及第二树脂泡沫层，其设置在用于固定所述抛光垫的台板和所述第一树脂发泡层之间，包括具有孔径为20μm以下且具有50〜250μm的厚度的孔的树脂发泡体，以及 其中第一树脂发泡层和第二树脂发泡层的总厚度为550μm以下，通过根据JIS K6253的M法测定的研磨垫的国际橡胶硬度为40IRHD以上。
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公开(公告)号：US08092280B2
公开(公告)日：2012-01-10
申请号：US12628484
申请日：2009-12-01
CPC分类号： G11B5/8404 , B24B37/24 , B24D3/32
摘要： The present invention relates to a method for producing a glass substrate for a magnetic disk, the method including a step of polishing a main surface of a circular glass plate while supplying a polishing slurry containing a polishing material, in which polishing is performed, after a polishing surface is subjected to dressing treatment, by using a polishing pad having: a first resin foam layer which forms the polishing surface, includes a resin foam having pores with a pore diameter of more than 20 μm and has a thickness of 400 μm or less; and a second resin foam layer which is provided between a platen for fixing the polishing pad and the first resin foam layer, includes a resin foam having pores with a pore diameter of 20 μm or less and has a thickness of 50 to 250 μm, and in which a total thickness of the first resin foam layer and the second resin foam layer is 550 μm or less, and a international rubber hardness degree of the polishing pad measured by the M method according to JIS K6253 is 40 IRHD or more.
摘要翻译： 本发明涉及一种用于制造磁盘用玻璃基板的方法，所述方法包括以下步骤：向所述圆形玻璃板的主表面进行抛光，同时向所述抛光材料供给包含抛光材料的抛光浆料 通过使用具有：形成研磨面的第一树脂发泡层的研磨垫，进行敷料处理，包括孔径在20μm以上，厚度为400μm以下的孔的树脂发泡体 ; 以及第二树脂泡沫层，其设置在用于固定所述抛光垫的台板和所述第一树脂发泡层之间，包括具有孔径为20μm以下且具有50〜250μm的厚度的孔的树脂发泡体，以及 其中第一树脂发泡层和第二树脂发泡层的总厚度为550μm以下，通过根据JIS K6253的M法测定的研磨垫的国际橡胶硬度为40IRHD以上。
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10.发明申请GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, AND METHOD FOR MANUFACTURING THE SAME 审中-公开用于磁记录介质的玻璃基板及其制造方法公开(公告)号：US20110189506A1
公开(公告)日：2011-08-04
申请号：US13017609
申请日：2011-01-31
申请人： Kazuo Mannami , Hitoshi Mishiro , Norihito Shida , Masabumi Ito , Hiroyuki Masuda , Toru Momose
发明人： Kazuo Mannami , Hitoshi Mishiro , Norihito Shida , Masabumi Ito , Hiroyuki Masuda , Toru Momose
CPC分类号： C10M169/04 , C10M133/00 , C10M2203/1025 , C10M2215/064 , C10M2215/065 , C10M2215/28 , C10N2230/04 , C10N2230/10 , C10N2230/42 , C10N2230/45 , C10N2240/10 , C10N2240/103 , C10N2240/104 , C10N2240/121 , C10N2260/14
摘要： The present invention relates to a glass substrate for a magnetic recording medium, which is a disk-shaped glass substrate for a magnetic recording medium having a circular hole at the center thereof, in which the glass substrate for a magnetic recording medium has an inner peripheral side surface, an outer peripheral side surface and both main surfaces, and the both main surfaces have parallelism of 3.2 μm or less in at least a recording and reproducing region thereof.
摘要翻译： 本发明涉及一种用于磁记录介质的玻璃基板，该玻璃基板是用于磁记录介质的圆盘形玻璃基板，该磁性记录介质在其中心具有圆形孔，其中用于磁记录介质的玻璃基板具有内周 侧表面，外周侧表面和两个主表面，并且两个主表面在至少其记录和再现区域中具有3.2μm或更小的平行度。
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